A JT8D engine was overhauled and returned to service and installed on an aircraft with 1 incorrect fan blade installed. This was an engine shop error.

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Attributes
ACN	689919
Time
Date	200603
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Person 1
Affiliation	company : air carrier
Function	maintenance : inspector
ASRS Report	689919
Person 2
Affiliation	company : air carrier
Function	maintenance : technician
ASRS Report	689912
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : far non adherence : published procedure
Independent Detector	other other : 1
Resolutory Action	none taken : detected after the fact other
Consequence	other other
Factors
Maintenance	contributing factor : engineering procedure contributing factor : manuals contributing factor : work cards performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance performance deficiency : installation performance deficiency : inspection
Supplementary
Problem Areas	Maintenance Human Performance Aircraft Environmental Factor
Primary Problem	Maintenance Human Performance

Narrative:

Part number XXX was sent to maintenance on apr/xx/02 and returned to air carrier as part number XXX on may sun/02. Repair authority/authorized paperwork was correct showing the part as an XXX. However; the shop order was per an xxy. Blade was inspected back from repair authority/authorized in shop and part number on original shop order was modified by someone; no initials or employee number adding -001. The engine was removed on dec/mon/05 as part on normal maintenance. The part number and company part number did not match the shop order. Callback conversation with reporter revealed the following information: the reporter stated this event occurred about 2 yrs ago and was just discovered on a paperwork audit accomplished by the reporter. The engine was removed and the incorrect blade removed and replaced. No engine damage was incurred.

Original NASA ASRS Text

Title: A JT8D ENG WAS OVERHAULED AND RETURNED TO SVC AND INSTALLED ON AN ACFT WITH 1 INCORRECT FAN BLADE INSTALLED. THIS WAS AN ENG SHOP ERROR.

Narrative: PART NUMBER XXX WAS SENT TO MAINT ON APR/XX/02 AND RETURNED TO ACR AS PART NUMBER XXX ON MAY SUN/02. REPAIR AUTH PAPERWORK WAS CORRECT SHOWING THE PART AS AN XXX. HOWEVER; THE SHOP ORDER WAS PER AN XXY. BLADE WAS INSPECTED BACK FROM REPAIR AUTH IN SHOP AND PART NUMBER ON ORIGINAL SHOP ORDER WAS MODIFIED BY SOMEONE; NO INITIALS OR EMPLOYEE NUMBER ADDING -001. THE ENG WAS REMOVED ON DEC/MON/05 AS PART ON NORMAL MAINT. THE PART NUMBER AND COMPANY PART NUMBER DID NOT MATCH THE SHOP ORDER. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THIS EVENT OCCURRED ABOUT 2 YRS AGO AND WAS JUST DISCOVERED ON A PAPERWORK AUDIT ACCOMPLISHED BY THE RPTR. THE ENG WAS REMOVED AND THE INCORRECT BLADE REMOVED AND REPLACED. NO ENG DAMAGE WAS INCURRED.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.